Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
POSCO INC
310 BALLARDVALE ST, WILMINGTON, MA, 01887
Parent company: NA
Carcinogen
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Methanol | Xylene (mixed isomers) | 1,1,1-Trichloroethane | Dichloromethane | Toluene | Total (lbs) |
| 2020 | 452 | 189 | — | — | 201 | 842 |
| 2019 | 197 | — | — | — | — | 197 |
| 2017 | 193 | — | — | — | — | 422 |
| 2005 | 36 | — | — | — | — | 36 |
| 1994 | 250 | 250 | — | 250 | 250 | 1,500 |
| 1993 | — | 5 | 5 | 5 | 5 | 30 |
| 1992 | — | 10 | 10 | 10 | 10 | 60 |
| 1991 | — | 5 | 5 | 5 | 5 | 35 |
| 1990 | — | 5 | 250 | 250 | 5 | 520 |
| 1989 | — | 250 | 250 | 250 | 250 | 1,500 |
| 1988 | — | 250 | 250 | — | — | 750 |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.